Atomizer or spray nozzle



Patented Mar. 30, 1926. A UNITE-,D STATES STEFAN ERDINA, 0F PRACHN-SELT'Y, CZECHOSLOVAKIA.

ATOMIZER OE SPRAY NOZZILE.

Application :tiled December 16, 1.925. Serial No. 75,809.

To all ywhom t may concem:

Be it known that I, STEFAN HRDInA, a Czechoslovakian citizen, residing at No. 3 of lrachen-Selty, Czechoslovakia, have invented a certain new and useful Atomizer or Spray Nozzle, of which the following is a specification.

Thls lnventlon relates to atomizers or spraylng nozzles, and more particularly nozzles of the type'comprisinga blast jet for inducing flow of liquid which isv atomized by the blast and delivered from the nozzle in an atomized condition.

One object of this invention is to provide a jet pipe of the type in question with means for centering it in the nozzle.

A further object is to provide such jet pipe with ribs which are formed by pressing and folding the metal of the pipe, where by integral ribs of two thicknesses of 'metal pressed closely together are pro-duced.

Yet another object; is to provide a jet pipe of the type in questionwith external ribs and a reduced bore at its deliveryend, said ribs constituting.` means for. .centering the pipe in the nozzle. and also, if desired,'

whirling means for the liquid, and said reduced bore constituting a cone or )et nozzle for the concentrated'delivery ofthe air. Y ,Y

n the annexedv drawing forming part' of this specification, one construction embodying this invention is illustrated by way of example, and in this drawing Figure l-is partly a central vertical sec-v tion and partly a side elevation of a nozzle device comprising a jet pipe having centering ribs.

Figure 2 is an elevation on a larger scale ofl the delivery end of the jet pipe, and

Figure 3 isa plan of Figure 2 as seen from below.

Referring to Figure l, 1- is atspigot or fitting for supporting the atomizer. nozzle 3 which is screwed into such fitting. The said nozzle I3 is in communication with a bore in the fitting', which bore, in turn, is in communication with a suction or supply pipe 4 conveying to the nozzle the fluidl to be atomized.

:into the upper part of the iitting, and in axial alignment with the nozzle 3, thereis screwed a nipple 2 carrying `a jefJ pipe 5 which latter isl to be centered within# the nozzle 3. The nipple 2 is adapted to be connected with a hose or other duct supplying the blast or Huid under pressure.

tightly together.

Referring to Figures l to 3, it will he seen that the delivery end of the jet pipe 5 is deformed vso as to produce' externally thereof radial ribs 6 and so as to reduce the outlet end of the bore thereof to the cone form illustrated.

This .shaping can be effected -by .inserting a mandril into the jet pipe and using a press tool which contracts the jet pipe onto the mandril, while at-the ysame time folding and pressing the metal to produce the ribs.6,

each of which, as seen in Figure 3, is commetal pressed' vposed of two thicknesses of The ribs 6 extend sufficiently beyond the circumference of the `jet pipe 5 to serve -as centering means within 4the nozzle 3. Thus, when the-jet pipe 5 is inserted into'the nozzle 3 from the upper end thereof in Figure l, and the nipple 2 is screwed down in the fitting 1, the points at the greatest width of the ribs 6 engage and move down the interior of the nozzle 3 .and thus accurately.

center the 'et pipe 5.

It will e notedL that thel jet pipe 6 is .inserted sothat its orifice 4lies within the bore of the fitting 1 into the upper part of' the fitting and down the vannularpassage between the jetl pipe 5 and the nozzle 3. Such li uid is disturbed in passing the fins or' ri 6 and entering the chamber 7 and may be caused actually to swirl in the chamber 7; Thus, the liquid, on being imping'ed upon and taken up by the jet from the' pipe 5, is completely atomized and is delivered in such atomized condition from the orifice of the nozzle 3. i

I claimz' .l

1. An atomizer. or spraying nozzle, comprising a nozzle tube, and a concentric pressure jetftube in the `bore thereof; the jet tube having its'outlet end deformed to constrict the same and to produce integral centering members which are slidably engaged with the wall of the bore of the nozzle tube.

2. An atomizer or spraying nozzle, comprising a nozzle tube, and a concentric preslos sure jet tube in the bore thereof; the jet tube having its outlet end deformed'to constrict the same and to produce integral radial centering ns which are slidablylengaged with the Wall of the bore of the nozzle tube.

3. An atomizer or spraying 'ozzle, comprsng a, nozzle tube, and a concentric pressure jet tube in the bore thereof; the jet tube haymg itsl outlet end deformed to concentering fins composed of two thicknesses of Vmetal folded closely together, lsaid fins being' sldably engaged with thewall of the bore ofthe nozzle tube.

In testixnony whereof I have sighed my l5 name to thls specification. c

' STEFAN Henner.- f 

